He said with 300 miles of roadway in the township, that amount will likely only last two days.

"We have a salt shortage. We're in salt conservation mode, meaning we're only salting hills, intersections and we're plowing. Our supplier hasn't been able to deliver any salt to us for the last two weeks," Volpe said.

Volpe said suppliers simply haven't been able to provide townships and boroughs with the salt they need. "We're under state contracts. We give them estimates of what we need every year, and we're not even to that. We're trying to make other contacts but I'm sure everybody is in the same boat," he said.

Officials with the city of Monessen said they have about 100 tons of rock salt left and they don't have an order coming in any time soon. Dan Stevens with Westmoreland County Emergency Management said the city of Greensburg is also running low on salt.

Volpe urges drivers to be patient with road crews as they work to plow streets while combating depleting salt supplies.